Multiple Choice
Which of the following statements is true?
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8. Joints
Structural Class: Cartilaginous Joints
Problem 6
Textbook Question
The articulating ends of bones of synovial joints are covered in______. The remaining internal surfaces of the joint are lined by the_____, which produces synovial fluid. The entire joint is encased by the_____, which is composed of dense, irregular collagenous connective tissue.
Verified step by step guidance1
Step 1: Understand the structure of synovial joints. Synovial joints are specialized joints that allow free movement between articulating bones. They are characterized by specific components such as cartilage, synovial membrane, synovial fluid, and a joint capsule.
Step 2: Identify the tissue covering the articulating ends of bones. The articulating ends of bones in synovial joints are covered by articular cartilage, which is a type of hyaline cartilage. This cartilage reduces friction and absorbs shock during movement.
Step 3: Determine the lining of the remaining internal surfaces of the joint. The internal surfaces of the joint, excluding the areas covered by articular cartilage, are lined by the synovial membrane. This membrane is responsible for producing synovial fluid, which lubricates the joint and nourishes the cartilage.
Step 4: Recognize the structure encasing the entire joint. The entire synovial joint is encased by the joint capsule, also known as the articular capsule. This capsule is composed of dense, irregular collagenous connective tissue, providing strength and stability to the joint.
Step 5: Summarize the components. The articulating ends of bones are covered by articular cartilage, the remaining internal surfaces are lined by the synovial membrane, and the entire joint is encased by the joint capsule made of dense, irregular collagenous connective tissue.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Articular Cartilage
Articular cartilage is a smooth, white tissue that covers the ends of bones in synovial joints. It provides a low-friction surface for joint movement and absorbs shock, helping to protect the underlying bone during activities such as walking or running.
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Hyaline Cartilage
Synovial Membrane
The synovial membrane is a specialized connective tissue that lines the inner surfaces of synovial joints, excluding the areas covered by articular cartilage. It plays a crucial role in joint health by producing synovial fluid, which lubricates the joint and nourishes the cartilage.
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Joint Capsule
The joint capsule is a fibrous structure that encases the entire synovial joint, providing stability and protection. Composed of dense, irregular collagenous connective tissue, it helps maintain the integrity of the joint while allowing for a range of motion.
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